However, any unexpected interruption today, if it lasts for days, will pose serious threat to our survival. If mains-water supply fails, where can we obtain drinking water?
可是如今，任何突如其来的灾难，只要持续几天，那我们的生存都要受到威胁：如果停水，哪里可以找到可以暂时饮用的水源？
However, any unexpected interruption today, if it lasts for days, will pose serious threat to our survival. If mains-water supply fails, where can we obtain drinking water?
可是如今，任何突如其来的灾难，只要持续几天，那我们的生存都要受到威胁：如果停水，哪里可以找到可以暂时饮用的水源？
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